Modeling to determine the size dependence of Debye temperature in monometallic and bimetallic nanoalloys

IF 1.1 4区工程技术 Q4 Engineering

High Temperatures-high Pressures Pub Date : 2022-01-01 DOI:10.32908/hthp.v51.1123

M. Goyal, Madan Singh

引用次数: 0

Abstract

A simple unified model is used to study the variation in Debye temperature in monometallic and bimetallic nanoalloys. In the present study, a systematic investigation of variation in Debye temperature is done to analyze the impact of size, shape, composition and dimension in monometallic and bimetallic nanoalloys. It is found that Debye temperature in monometallic and bimetallic nanoalloys decreases with decrease in size of nanoalloy. Moreover, for nanoalloys of same size and composition, the Debye temperature varies with dimension too. Debye temperature of nanofilms is found more than that of nanowires and nanoparticles. Debye temperature is also found to vary with shape of the nanoalloy due to change in surface area to volume ratio with shape. The predicted model results are found in good agreement with the available experimental results which justifies the suitability of the present model.

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建立模型以确定单金属和双金属纳米合金中德拜温度的尺寸依赖性

采用简单的统一模型研究了单金属和双金属纳米合金的德拜温度变化。在本研究中，系统地研究了德拜温度的变化，分析了单金属和双金属纳米合金的尺寸、形状、成分和尺寸的影响。发现单金属和双金属纳米合金的德拜温度随纳米合金尺寸的减小而减小。此外，对于相同尺寸和成分的纳米合金，德拜温度也随尺寸的变化而变化。纳米膜的德拜温度高于纳米线和纳米颗粒。由于纳米合金的表面积体积比随形状的变化而变化，因此德拜温度也随纳米合金的形状而变化。模型的预测结果与已有的实验结果吻合较好，证明了模型的适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Temperatures-high Pressures THERMODYNAMICS-MECHANICS

CiteScore

1.00

自引率

9.10%

发文量

期刊介绍： High Temperatures – High Pressures (HTHP) is an international journal publishing original peer-reviewed papers devoted to experimental and theoretical studies on thermophysical properties of matter, as well as experimental and modelling solutions for applications where control of thermophysical properties is critical, e.g. additive manufacturing. These studies deal with thermodynamic, thermal, and mechanical behaviour of materials, including transport and radiative properties. The journal provides a platform for disseminating knowledge of thermophysical properties, their measurement, their applications, equipment and techniques. HTHP covers the thermophysical properties of gases, liquids, and solids at all temperatures and under all physical conditions, with special emphasis on matter and applications under extreme conditions, e.g. high temperatures and high pressures. Additionally, HTHP publishes authoritative reviews of advances in thermophysics research, critical compilations of existing data, new technology, and industrial applications, plus book reviews.